16019558225 has 12 divisors (see below), whose sum is σ = 21670093680. Its totient is φ = 11650587600.

The previous prime is 16019558189. The next prime is 16019558227. The reversal of 16019558225 is 52285591061.

It is not a de Polignac number, because 16019558225 - 2⁸ = 16019557969 is a prime.

It is a super-3 number, since 3×16019558225³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16019558227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29126195 + ... + 29126744.

It is an arithmetic number, because the mean of its divisors is an integer number (1805841140).

Almost surely, 2^16019558225 is an apocalyptic number.

It is an amenable number.

16019558225 is a deficient number, since it is larger than the sum of its proper divisors (5650535455).

16019558225 is a wasteful number, since it uses less digits than its factorization.

16019558225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58252960 (or 58252955 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 44.

The spelling of 16019558225 in words is "sixteen billion, nineteen million, five hundred fifty-eight thousand, two hundred twenty-five".